The Best Thing To Clear Your Voice

Unfortunately the mouth is a noisy place with that wagging tongue dancing in your mouth and so several things happen when your mouth is dry to your voice.

Sadly a cold glass of water will contract your vocal cords. Milk will increase mucous production so you can have the opposite problem of a wet mouth. Whiskey and beer need to be the right amount not to again from one side to the other side of the spectrum. Tea is probably the best.